Fluid-pressure governor.



G. MACLOSKI.

FLUID PRESSURE GOVERNOR.

APPLICATION FILED AUG. s, 190s.

Patented Mal'. 29, 1910 P0 N Mm @si wentor: George macloskie,

ance with my i" UNE-illicit@ PATENT OFFICE.

GEORGE MACLOSIHE, OIF SCHENECTADY, NEW YORK, ASSIGNOR 10 GENERALELECTRIC VGOMPANY, .A CORPORATION OF YORK.

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essere.

Specification of Letters Patent.Y Patented Mar. 29, 1910.

Application tiled August 8, 1903. Serial No. 447,514.

To all whom it 'may concern:

Be it known that l, Grenen MAcLosnm, a citizen of the United States,residing at Schenectady, county of Schenectady, State of New York, haveinvented certain new and useful improvements in Fluid-.PressureGovernors, of which the following is a speciiication.

My invention relates to fluid pressure gov! by the valve mechanism, andmeans conv trolled byfthe said member for controlling the pressure inthereservoir by starting and stopping the ni'otor drivingftl e compressorwhichsupplies thereservoir.

011e feature of my invention consists in providing means forcompensating for leale age past the movable member, and consists,

in providing the chamber, in which the movable member is'placed, with asmall port which suppliespressure to the chamber independently of thevalve mechanism, and which is arranged to be closed by the mein be' inone of its positions.

Another feature of my invention consists 'in the connections which lemploy between the movable abutment and the valve device -controllingthe pressure on the movable member. provide two independently movablevalves, both mechanically connect-ed to the abutment with a lost-motiondevice inserted in the connections, so as to obtain an Ainterval in themovement or" the abutment between the movements of the two valves. Ifurther arrange the connections so that they are adjustable to varythisinterval.

My invention will best be understood by reference to the accompanyingdrawing, in which-u Figure l, shows a cross-sectional view of atluidpressure governor arranged in accordi, and Fig. 2 is a diai'ions oithe governor to gram or' the con 'reservoir and to the r-cinureesormotor.

in Fig'. l, A. reprfA :i chamber which is connected through a pipe a tothe reservoir B (see Fig. 2). Crepresents a dia hragm in the chamber A,which is subjecte to .reservoir pressure. vThe reservoir pressure on.the diaphragm C is opposed by a compression spring D. The pressure ofthis spring is adjustable by means o f a nut d. E repre,- sents a secondchamber in which is a piston F, responsive to variations of pressure inthe chamber E. A spring Gr presses piston F downward, and, as long a'sthere is no pressure in chamber E, holds the piston in the positionshown. -H represents a contact member carried-by the spindle of piston Farranged to bridge the contacts 71.' when piston F is in the ositionshown. These contacts It control tli pressor J; which supplies thereservoir B (see Fig. 2). K represents a. uppet valve which is normallheldv seated) by a 'light spring k, but which, when raised, connectschamber A and.l chamber E, thereby subjecting piston .F toreservoirpressure. The valve K is actuated through a lost-motion connection bythe diaphragm C. This lost motion connection comprlses a member Lsecuredv to the diaphragm C and arranged to engage one or the other of two collars k1 onthe spindle of valve K. yM represents a seclond puppetvalve, Which is normally pressed upward against its seat by a lightspring m. When valve M is opened, it connects chamber E to atmospherethrough port N, thereby removing the pressure from the lower side oipiston F. With the"diaphrugm C in thev position shown, valve M isclosed, but is 'opened upon a downward movement of the diaphragm by aplunger O, which is carried by an arm P secured to the abutment. The

plunger Ois screw-threaded, so that-.its po-v sition, with respect toarm P, and consequently to diaphragm C, is adjustable. Q, represents asmall port openin e motor I driving the comf into chamber E, andconnected independent y of the valves to chamber' A, so that when portQ, isopened, reservoir' pressure is supplied through it to chamber E.When piston F is in the position shown, port Q, is closed, but ywhen thepiston is raised by the admission of'pressure into chamber E, port, Q,Iserves to supply sufficient air to compensate forleakage. past.

the piston.

In the position of the parts shown in Fig.

l, piston F is at its lowjest position, closing ment, said connectionsincluding a lost-motion device, and being adjustable to Vary the pointin the movement of said abutment at which one of said Valves isactuated, means for adjusting the opposing pressure on said faintment tovary the amount of reservoir' L)ressure required to move said abutment,and means controlled by said member for controlling the", ,ressure insazibreservoir.

6. In combin ion with a reservoir, a Huid pressure governor comprisingvaL movable f abutment subjected to a pressure corresponding to thepressure in said reservoir, means for bpposing said pressure on saidabutment,

,a chamber having a restricted-.eport connected directly to saidreservia movable member' thereln responsive to fluid pressure,

a pair of independently movable valves arranged respectlvely to raiseand lower the pressure in said chamber, mechanical connections betweenone of said valves and said abutment including a lost-motion device, a Y

plunger 4 actuated by' said abutment and adapted to engage and move theother valve, said plunger being adjustable in position with respect tosaid abutment, and means controlled byfvsaid member for controlling thepressnre'isaid reservoir.

In Witness fvfvhreof, I have hereunto set my hand thi's-erh'day ofAugust, 1908.

GEORGE MACLOSKIE. Witnesses: A.

BENJAMIN B. HULL, HELEN ORFoRD.

